Definition of guarana
: a dried paste that is made from the seeds of a South American climbing shrub (Paullinia cupana) of the soapberry family, that contains caffeine and tannin, and that is used as a stimulant; also : this plant
Recent Examples of guarana from the Web
The substance is made of cacao powder, as well as gingko biloba, taurine and guarana, ingredients commonly found in energy drinks.
Information based on scientific testing should also be made available on the effects of energy drink additives, such as guarana and taurine, that can increase the potency and increase the effects of caffeine.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'guarana'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of guarana
Portuguese guaraná, from Nhengatu (Tupi-based lingua franca of Amazonia), from Sateré-Mawé (Tupian language of the middle Amazon River basin) warana
First Known Use: 1838See Words from the same year
Medical Definition of guarana
: a dried paste made from the seeds of a Brazilian climbing shrub (Paullinia cupana) containing tannin and caffeine and used in making an astringent drink
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